She Professed Herself Pupil of the Wise Man (Light Novel) Vol. 15

THIS TOURNAMENT SPELLS TROUBLE!
Nirvana’s martial-arts tournament attracts fierce warriors from every corner of the continent. Mira’s sure Meilin will be among them. She wends her way to the tournament city, ready to track her fellow Wise Man down. But once she arrives, Mira can’t just throw herself into finding Meilin. Trouble’s brewing in her destination, and whatever’s going on will make the reunion she envisions that much tougher—if she can reunite with Meilin at all!
Series Overview: Sakamori Kagami was one of the top players in the VRMMO Ark Earth Online as Danblf, a veteran summoner with the gravitas to match his elite status.
When he falls asleep playing one day, he’s transported to a world where the game is reality—but instead of his all-powerful avatar, he’s stuck in the body of a cute young girl! He can’t let anyone know that this little cutie is really Danblf, so he takes the name “Mira” and claims to be Danblf’s disciple. If this gets out, he’ll never live it down!